diff --git a/platformio/cache.py b/platformio/cache.py
index 20901545..4b73bd67 100644
--- a/platformio/cache.py
+++ b/platformio/cache.py
@@ -12,7 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import codecs
 import hashlib
 import os
 from time import time
@@ -57,7 +56,7 @@ class ContentCache:
         cache_path = self.get_cache_path(key)
         if not os.path.isfile(cache_path):
             return None
-        with codecs.open(cache_path, "rb", encoding="utf8") as fp:
+        with open(cache_path, "r", encoding="utf8") as fp:
             return fp.read()
 
     def set(self, key, data, valid):
@@ -78,7 +77,7 @@ class ContentCache:
         if not os.path.isdir(os.path.dirname(cache_path)):
             os.makedirs(os.path.dirname(cache_path))
         try:
-            with codecs.open(cache_path, mode="wb", encoding="utf8") as fp:
+            with open(cache_path, mode="w", encoding="utf8") as fp:
                 fp.write(data)
             with open(self._db_path, mode="a", encoding="utf8") as fp:
                 fp.write("%s=%s\n" % (str(expire_time), os.path.basename(cache_path)))
diff --git a/platformio/project/integration/generator.py b/platformio/project/integration/generator.py
index 3cb677f1..53d229ea 100644
--- a/platformio/project/integration/generator.py
+++ b/platformio/project/integration/generator.py
@@ -12,7 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import codecs
 import os
 import sys
 
@@ -167,12 +166,12 @@ class ProjectGenerator:
 
     @staticmethod
     def _render_tpl(tpl_path, tpl_vars):
-        with codecs.open(tpl_path, "r", encoding="utf8") as fp:
+        with open(tpl_path, "r", encoding="utf8") as fp:
             return bottle.template(fp.read(), **tpl_vars)
 
     @staticmethod
     def _merge_contents(dst_path, contents):
         if os.path.basename(dst_path) == ".gitignore" and os.path.isfile(dst_path):
             return
-        with codecs.open(dst_path, "w", encoding="utf8") as fp:
+        with open(dst_path, "w", encoding="utf8") as fp:
             fp.write(contents)